The digit in the tens placeof a two digit is three times that in the units place. if the digits are reversed , the new no will be 36 less than the original number .Find the original no.

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If a number's ten digit is and the units digit is , then you can write the number as .

Obviously, inverting the digits would lead to the number .

Since this new number is 36 less than the original, we have

Since we also know that the digit in the tens place is three times that in the units place, we can add an equation to form a system:

And thus

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step-by-step explanation: